Correction: Rewritable full-color computer-generated holograms based on color-selective diffractive optical components including phase-change materials

Hwang, Chi-Young,Kim, Gi Heon,Yang, Jong-Heon,Hwang, Chi-Sun,Cho, Seong M.,Lee, Won-Jae,Pi, Jae-Eun,Choi, Ji Hun,Choi, Kyunghee,Kim, Hee-Ok,Lee, Seung-Yeol,Kim, Yong-Hae The Royal Society of Chemistry 2018 Nanoscale Vol.10 No.47

<P>Correction for ‘Rewritable full-color computer-generated holograms based on color-selective diffractive optical components including phase-change materials’ by Chi-Young Hwang <I>et al.</I>, <I>Nanoscale</I>, 2018, DOI: 10.1039/c8nr04471f.</P>

절수에 의한 Mongolian Gerbil 장기중량변화에 관한 분석연구

김무강,이기훈,이강이,송치원,이경열,권효정,박미선,정승혁,이행연,김명철 충남대학교 수의과대학 동물의과학연구소 2000 動物醫科學硏究誌 Vol.8 No.-

In this study, authors measured the each organ weight of the long term water deprived Mongolian gerbil, after then we calculated the mean, standard deviation, variance coefficient of the real measured organ weight and induced the organ weight change quantity, rate of quantity, deviation between measured and theological organ weight, deviation rate, sum of deviation rate, organ weight change rate, rate of organ weight by the mathematical formula. The results obtained as follow 1. The weight of the brains, lung, and testis were abruptly decreased after water deprived until the 5th day, after then slowly decreased until the 20th day. 2. The weight of the heart was decreased gradually from the first day until the 20th day. 3. The weight of the liver was abruptly decreased until the 10th day, after then the more slowly decreased until the 20th day. 4. The weight of the thymus, spleen, kidney, and pancreas were abruptly decreased until the 15th day, after then increased slowly until 20th day but the weight of the kidney was abruptly increased from the 10th day. 5. The organ weight change rate and the rate of the each day organ weight were very diversified.

[논문]해석방법에 따른 사각 RC 라멘교의 거동

진치섭,이승훈,엄장섭,배상현 釜山大學校生産技術硏究所 2006 生産技術硏究所論文集 Vol.65 No.-

본 연구에서는 사각(900°~450°) RC 라벤교를 2차원 보해석과 3차원 판해석으로 해석하였다. 연구 결과로부터 다음과 같은 결론을 얻었다. 슬래브 지점부의 단면력 집중에 따라,3차원 판해석에 의한 단면력은 2차원 보해석의 단면력보다 1.015~1.830배 크게 나타났다. 따라서 슬래브 지점부의 철근 보강 영역은 경사폭의 0.11~0.30배로 나타났다. 슬래브 최대 정모멘트 발생각과 라멘교 사각과의 상관관계를 살펴보면, 라벤교 사각 900° ~45°에 대하여 최대 정모벤트 발생각은 93° ~ 51°로 나타났다. 따라서 라벤교의 주인장 철근 이음장 위치는 최대 정모맨트 발생 구역 밖에들도록 해야한다.

딜티아젬 함유 코아 펠렛으로부터 약물의 용출에 미치는 폴록사머 함량의 영향

이승우,감성훈,홍지웅,최기송,박은석,지상철 한국약제학회 2002 Journal of Pharmaceutical Investigation Vol.32 No.4

In order to evaluate the effect of poloxamer 407 content on the dissolution profiles of pellets, diltiazem HCl (DTL) core pellets were prepared with poloxamer 407 (50∼90% w/w, with lactose as filler) using an extruder and a spheronizer. Any possible interaction between the drug and excipients was evaluated using DSC, IR and TLC. Dissolution tests were performed using USP basket method. In addition, scanning electron micrograph was performed to examine the surface roughness and cross sections. The release of DTL from the core pellets was decreased with increasing poloxamer 407 content. Cracks appeared on the surface of the core pellets with increasing the poloxamer 407 content, which may play a role on the retardation of the release of DTL from core pellets. There was no any significant interaction between the drug and excipients employed to prepare the core pellets.

다형성교아세포종을 동반한 Von Recklinghausen氏 병 1예

이현개,이종수,백민우,이승재,박효일,지제근 인제대학교 1981 仁濟醫學 Vol.2 No.4

가족성으로 신경섬유종증에 동반되는 중추신경계의 종양으로 수막종, 신경교종, 신경초종 등이 있으며 이들은 드물지 않게 보고되었다. 그러나 신경교세포에 생기는 종양 중 신경섬유종증에 동반되어 대뇌에 생긴 다형성교아세포종은 매우 드물다. 본 교실에서 가족성으로 발생한 신경섬유종증의 환자에 동반된 다형성교아세포종을 경험하였으며 가족중 부친은 von Recklinghausen씨 병을, 또 두 자녀는 다발성 cafe´ au lait spots를 가지고 있었다. The tumors of the central nervous system associated with familial neurofibromatosis are meningioma, glioma, and neurilemmoma, which are not uncommon. Of the glial tumors of the central nervous system, the association of cerebral glioblastoma multiforme with neurofibro matosis is very rare. We have experienced the unusual coincidence of neurofibromatosis and glioblastoma multiforme in a 33 year old man, whose father was afflicted with von Recklinghausen's disease and whose son and daughter had also multiple cafe´ au lait spots on their bodies.

스프레드시트와 Green 정리를 이용한 철근 콘크리트 단주의 해석 및 설계

진치섭,한상중,엄장섭,이승훈 釜山大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.55 No.-

구조물 설게에서, 압축과 2축 휨을 동시에 받는 기둥 설계를 자주 접하게 된다. 이러한 부재의 해석과 설계는, 모멘트 평형에 따른 여러 변수들의 값을 동시에 구하기 위하여 반복적인 작업이 필요하기 때문에 많은 시간을 요구한다. 본 연구에서는 압축과 2축 휨을 받는 철근 콘크리트 단주를 해석 및 설계할 수 있는 컴퓨터 프로그램 COL2를 개발하였다. 프로그램 COL2는 스프레드시트 프로그램 중의 하나인 엑셀을 이용한 사용자 위주 환경의 프로그램으로 개발되었다. Green정리를 사용하여 임의 형상의 역학적 특성을 계산하였다. In structural design, columns subjected to combined compression and biaxial bending are frequently encountered. The analysis and design of such members, are both time consuming and demanding because an iterative procedure is reuqired in order to simultaneously evaluate a number of variables to achieve moment equilibrium. A computer program COL2 is developed to analyze and design reinforced concrete short columns subjected to combined compression and bizxial bending in this study. The program COL2 has been developed for user-friendly environment using MS-Excel one of the spreadsheets program. The mechanical properties of generic shapes was calculated by Green's theorem.

인터넷 기반의 구조물 계측시스템 연구

김치엽,최만용,권일범,이승석 한국비파괴검사학회 2003 학술대회 논문집 Vol.- No.1

Structural health monitoring system should developed to be based on internet and database technology in order to manage efficiently large structures. This system is operated by internet connected with the side of structures. The monitoring system has some functions: self monitoring, self diagnosis, and self control etc. Self monitoring is the function of sensor fault detection. If some sensors are not normally worked, then this system can detect the fault sensors. Also Self diagnosis function repair the abnormal condition of sensors. And self control is the repair function of the monitoring system. Especially, the monitoring system can identify the replacement of sensors. For further study, the real application test will be performed to check some unconvinrences.

Cd 페라이트의 열적성질에 대한 Mossbauer 효과 연구

홍치유,백승도,이철세 동국대학교 자연과학연구소 1992 자연과학연구 논문집 Vol.12 No.-

이 논문에서는 100-900K의 온도영역에서 CdFe?O?의 Mossbauer 효과를 조사하였다. CdFe?O?의 이성질체 이동치는 온도의 증가에 따라 감소하며, 온도계수는 -5.789×10?㎜/sec·K이다. 사중극자 분열치는 온도에 따른 뚜렷한 변화가 없으며, 흡수선폭은 온도증가에 따라 증가하고, 공명흡수 면적의 온도 의존성을 이용하여 구한 CdFe?O?의 Debye dhsehss 515L이다. Mossbauer effect study is made on CdFe?O? in the temperature range from 100K up to 900K. The isomer shift of the CdFe?O? decrease with the temperature coefficient -5.789×10?㎜/sec·K as the increasing temperature, but we have observed no variation of quadrupole splitting with temperature. The average line width increase slowly with increasing temperature. The Debye temperature of the CdFe?O? calculated by the temperature dependence of the absorption area is 515K.

평형선형계획법에 의한 격자구조물의 설계

진치섭,최규식,이승훈 부산대학교 생산기술연구소 2000 生産技術硏究所論文集 Vol.59 No.-

본 연구의 목적은 구조물의 최적화 설계에 있어서 평형선형계획법이 적합하다는 것을 보여주는 것이다. 본 연구에서는 수직 하중을 받고 있는 직선 보로 구성된 격자구조물에 평형선형계획법을 적용시켰다. 보 요소가 하나의 설계변수를 가지게 하기 위하여 단면 물성치간의 관계를 나타낸 경험식을 사용하였다. 모든 비선형 함수들은 제 1차 테일러 급수 전개에 의하여 근사 선형화하였다. 선형화 시킨 후 건형 프로그램중의 하나인 심플렉스법을 이용하여 최적해를 얻었다 그 결과 평형선형계획법이 구조물 최적화 문제에 있어서 최적해를 찾는데 만족스러운 방법임을 알 수 있었다. In this study, equilibrium linear programming technique which is suitable for optimization of structures is introduced. An application is presented for grillage made of straight beams loaded normally. Empirical relationships are used to relate beam section properties so that each beam element has only one design variable. All of the nonlinear functions are linearized by the first order Taylor series expansion. Optimization results are obtained by simplex method which is one of the linear programming method. As results, the equilibrium linear programming technique is a satisfactory method for seeking g1oba1 optimum of structural optimization problems

폴리카프로락톤 매트릭스로부터 세파드록실의 방출에 미치는 BSA의 영향

김승렬,정연진,김영미,이치호,김대덕 한국약제학회 2004 Journal of Pharmaceutical Investigation Vol.34 No.5

In order to investigate the effect of bovine serum albumin (BSA), as a pore former, on the controlled release of an antibiotic from a biodegradable polymeric device, polycaprolactone (PCL)-cefadroxil matrices were prepared by the solvent casting method. The amount of cefadroxil released from various formulations at 37℃ was measured by HPLC. The duration of antimicrobial activity of matrices against S. aureus was evaluated by measuring the diameters of the inhibition zone. The morphology of the matrices was investigated by scanning electron microscopy (SEM). The release rate and extent of cefadroxil from PCL matrix increased as the loading dose and particle size of BSA/cefadroxil mixture powder increased. Cefadroxil released from the matrix exhibited antibacterial activity for up to 4 days. SEM of the cross-section of matrix showed the typical channel formation after 3 days of release study. Thus, a biodegradable polymeric matrix loaded with antibiotic/BSA mixture can effectively prevent bacterial infection on its surface, thereby bringing about an enhancement of biocompatibility of biomaterials.